The Sig Sauer SIERRA3BDX 2.5-8x32mm Riflescope is compact and lightweight. It was designed for ultra-lightweight rifle, shotgun muzzleloader, and crossbow configurations. With the power of the included BDX technology, it provides your exact holdover dot location on targets when coupled with a BDX capable Sig Sauer KILO rangefinder. Featuring exceptional SpectraCoat lenses, LevelPlex digital anti-cant, and KinETHIC kinetic energy transfer indicator, the Sig Sauer SIERRA3BDX 2.5-8x32mm Riflescope is incredibly easy to use. Range your target, put the holdover dot on target, and finally pull the trigger for a more precise impact.